#1 throws the ball out to #2
#1 closes out on #2
They play 1 on 1
The drill ends after the first shot is taken.
Closeout with proper technique
Communicate your closeout (i.e. "I got ball!")
Move on the air-time of the ball - be there on the catch
Closeout with proper foot positioning (match feet) and pick-up points (red light, yellow light, green light, etc.)
Finish the drill with a block out on the shot attempt